Relationship Between Soil Physicochemical Characteristics and Nitrogen-fixing Bacteria in Agricultural Soils of the Atlántico Department, Colombia.

Martnez Mera Eliana Andrea; Torregroza Espinosa Ana Carolina; Valencia Garca Anderson; Rojas Gernimo Laura

doi:10.25252/SE/17/51202

Author(s)

Martnez Mera Eliana Andrea Universidad de la Costa CUC, Facultad de Ingeniería, Barranquilla, Colombia

Torregroza Espinosa Ana Carolina Universidad de la Costa CUC, Facultad de Ingeniería, Barranquilla, Colombia

Valencia Garca Anderson Universidad de la Costa CUC, Facultad de Ingeniería, Barranquilla, Colombia

Rojas Gernimo Laura Universidad de la Costa CUC, Facultad de Ingeniería, Barranquilla, Colombia

Abstract

Microbial richness of agricultural soils is an indicator of its health and fertility with a significant impact on crop yields. Present study analyzed the relationship between nitrogen-fixing bacteria and physicochemical characteristics of agricultural soils in the southern department of Atlántico, Colombia. Soil samples were collected from 10 sites of Repelón irrigation district, for physicochemical analysis (pH, organic matter, texture, moisture and available phosphorus) and isolation of nitrogen-fixing bacterial' strains using nitrogen-free culture media. Results demostrated the higher previlance of nitrogen-fixing bacteria in northern zone and central zone of the Repelón irrigation district (1.63 × 108 CFU g-1 for strain-1, 5.2 × 107 CFU g-1 for strain-2 and 4.5 × 107 CFU g-1 for strain3). On the other hand, the physicochemical characteristics of soil show the adequacy to sustain nitrogen-fixing bacteria. The findings of the present research may serve as a baseline to identify soil micorganisms and defining strategies for sustainable management of agricultural soils in the region because these are integral component in ecosystem for nutrient recycling.

Publication Details

Page(s) 174-181

DOI 10.25252/SE/17/51202

Published Journal: Soil and Environment, Volume: 36, Issue: 2, Year: 2017

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Keywords

fertilization, sustainable management, conservation., native microorganism

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